30results about How to "Overcoming Difficult Problems" patented technology

The invention discloses a non-submersible underwater pipeline remote operation welding maintenance equipment and method, comprising an H-shaped pipeline support frame, a casing positioner, a welding cabin, and a casing; the H-shaped pipeline support frame is equipped with a hydraulically driven Height adjustment mechanism, left and right adjustment mechanism, front and rear adjustment mechanism and pipe holding jaws; the casing positioner is equipped with hydraulically driven casing positioning claws; the casing has a wedge-shaped sealing ring; the welding cabin includes three welding cabin flaps and Six welding claws form a hexagonal structure after closing. The middle welding compartment is equipped with a drive chamber. The left welding chamber and welding compartment weight adjustment chamber are installed on the left welding compartment. The right welding compartment and welding compartment drainage chamber Installed on the flap of the right welding cabin, the left welding chamber and the right welding chamber are symmetrically arranged, and the driving chamber is equipped with a driving mechanism and a driving gear; relying on the sleeve to connect the old and new pipelines, it overcomes the need for underwater maintenance of large-scale pipelines For the problem of difficult alignment, the remote control operation and the connection process of GMAW surfacing welding + fillet welding have overcome the limitation of water depth. It can be widely used in the field of underwater and submarine pipeline maintenance.

The invention discloses a filling-type self-service flexible point-touch guiding cable dragging device for mines, which includes a cable retractable assembly, a flexible point-contact multi-dimensional nested curved guiding device, a fixing device, and a guiding device pulling part and a filling type fluid annular self-service thrust reverser, the flexible point-contact multi-dimensional nested curved guide device is movably arranged in the traction part of the guide device, and the flexible point-contact multi-dimensional nested curved guide The end of the device protrudes from the guiding device and the traction device is set; the fixing device is set on the flexible point-contact multi-dimensional nested curved guiding device, and the filling type fluid annular self-service thrust reverser is movably set on the fixing device , the cable retracting assembly is arranged close to the pulling part of the guiding device. The invention belongs to the technical field of cable tow cables, and specifically refers to a filling-type self-service flexible point-touch guiding cable dragging device for mines, which solves the problems of heavy cables, laborious dragging and moving of workers, and reduces cable dragging due to friction.

The present invention relates to a craniofacial interactive restoration method of ancient human skulls based on the soft tissue distribution of modern humans, specifically comprising the following steps: step 1, geometric repair of ancient human skulls; step 2, registration of ancient human skulls and modern human skulls; Step 3, craniofacial restoration based on the soft tissue distribution of the reference model; Step 4, construction of a candidate dataset of craniofacial restoration results; Step 5, interactive craniofacial restoration based on the statistical shape model. The beneficial effects of the ancient human skull craniofacial interactive restoration method based on the distribution of modern human soft tissues: improve the accuracy of the craniofacial restoration method based on skull registration; improve the accuracy of the ancient human skull craniofacial restoration results; improve the craniofacial restoration. The accuracy of surface restoration results.

The invention discloses a high efficient solar hot-gas generating system of mountain impact chimney. It is one generating device in facilities utilizing solar thermal energy which can regenerate greenenergy. It is characterized in that: it contains hot-gas duct system of heat collecting and retaining unit, hot-gas heat-collecting system of heat collecting and retaining unit of mountain body slopeand generating system. The hot-gas duct system contains mountain body, peak chimney on top of it, mountain chimney inside it and mountain flat cavity. The flat cavity connects with the upper hot-gaslinking duct, hot-gas duct of heat collecting and retaining unit of mountain body slope, lower cool-gas linking duct and cool-gas inlet duct of generator in sequent. The invention is the most economical generating mode with high-benefit, which has smallest investment, lowest cost, most simple structure, most rapid constructing speed, longest serve years and without pollution discharging or destroying ecological environment.

The invention discloses a method for building a mountain orchard transportation system, which includes two major operation steps of laying a monorail and assembling and debugging of a transport machine. The specific operation steps include: (1) preliminary design of the laying pattern of the monorail according to the type of fruit to be transported; 2) Determine the laying density of the monorail according to the yield and growth period of the fruit, and form a laying scheme in combination with the laying pattern in step (1); (3) carry out on-the-spot investigations on the mountain according to the laying scheme in step 2), and then conduct a laying plan. Site selection along the path, and mark the corresponding position; (4) Construct the cement mount on the path selected; (5) Install the monorail support frame on the cement mount; (6) Install the monorail splicing, and then erected on the monorail support frame; the construction method of the present invention can organically combine the construction of the track with the terrain, so that the stability and efficiency of the fruit transportation after construction are greatly improved, and it has the advantage of fast construction speed.

The invention provides a method for making 1-propyl bromide, which comprises the preprocessing of hydrogen bromide, the drying of propylene, the activation of propylene and the synthesis of 1-propyl bromide. The method is to use high-purity gaseous hydrogen bromide and polymer-grade propylene as raw materials and carry out free radical reaction under the action of air containing 20 to 50 ppm ozone to obtain a product containing more than or equal to 95 percent of 1-propyl bromide. The reaction is carried out under the water-free condition in the presence of a reductive agent. The process has the advantages of low production cost, short route, simple and convenient operation, little corrosion to equipment, environmental protection, etc.